Just create a method then call this from within your timer and also just before you start your timer.
private int counter;
Timer t = new Timer();
private void InitializeTimer()
{
counter = 0;
t.Interval = 750;
DoMything();
t.Tick += new EventHandler(timer1_Tick);
t.Enabled = true;
}
private void timer1_Tick(object sender, EventArgs e)
{
if (counter >= 3)
{
t.Enabled = false;
}
else
{
//do something here
counter++;
DoMything();
}
}
private void DoMything()
{
//Do you stuff here
}